Anthropomorphic baleen puppeteer (3.5e Optimized Character Build)
From D&D Wiki
puppeteer does not qualifi for symbiotic creature
the anthropomorphic baleen whale from savage species is an incredibly powerful race. I don't know what they were smoking when they made that. But this is optimized character builds! we can do better that simply taking a powerful race. This build takes only a single ECL higher to also create some pretty mad mental ability score.
savage species, expanded psionic handbook
Game Rule Components
Spells, Powers, Soulmelds, Stances, etc.
Starting Ability Scores (Before Racial Adjustments): <- starting ability scores before racial adjustments ->
Race (Templates): symbiotic creature with anthropomorpic baleen whale as the host, and a puppeteer as the guest. Starting Racial Traits: +8 str, +4 con, +4 dex, +4 int, +6 wis, +4 cha. 3d8 HD from anthropomorphic baleen whale and LA +1 from the symbiotic creature template gives us a starting ECL of 4. Not bad with those ability scores, is it? on top of this is the psionic abilities of the puppeteer.
im sure the reqal optimizers can find a better guest than a puppeteer.
you DM must allow you to use templates on your character.
have the players start at low ECL, like 4. then throw an incorporeal creature at them, and this guy is pretty powerless.